Fire-alarm.



. P. D. SMENNBR.

FIRE ALARM.

APPLICATION FILED SEPT. 9, 1908.

Patented Jan. 10, 1911 1111! 1111 11111 IIIIIIIIIII ,1 I

' WITNESSES:

ATTORNEY object is accomplish UNITED s ATEs PATENT ornion.

FREDERICK n. surmise, or rem warns, INDIANA.

To all whom it mayhem:

Be it known that I, Faaonmcx' mm, a citizen of the United States of Americe, and resident of Fort \Vayne, in the county of Allen and State of Indiana, have invented'certain new and useful Im rovements in Fire-Alarms, of which the f ing is a. specification.

Thisinvention relates to improvements in firea'larms, andthe object'thereof is to atford iipparatus of the class used for detecting the presence of fire, that will be. delicately sensitive to a flame, and at the same time exert sufiicient force when set-in operation to actuate alarms requiring more or less mechanical energy -to actuate. .This

by'the construction illustrated in the accompanying drawing which shows anelevation of the mechanism composing the apparatus together with it's accessories, parts thereof ,being shown ,in

'" vertical section.

Referring" now to the drawing, 1 is a case containing the actuating mechanism.. 7

2 and 3 are triggers which are pivoted respectively as shown at 2' and 3' so as to tilt thereon. The trigger 2 engages and holds in suspension a weighted arm 4 that swings on a pivot 5. hen released by the trigger 2 the arm is adapted to gravitate and strike another trigger 6 that detains'in suspension another weighted arm 7. \Vhen released by its trigger, the arm 7 is adapted to gravitate. and strike a trigger 9 that in turn detains in suspension a weighted arm 10, and the. latter is pivoted at 11 the same as the arm 7 is at 8 and arm 4 is at 5. The arm 10 when released by the trigger 9 adapted to gravitate and strike the trigger 12/ The blow of the respective arms against. the corresponding triggers beneath is such as to move the latter into lowermost position and cause the release of the parts held in suspension thereby. The several weighted arms are of ditfcrent sizes and consequently of difl'erent weight, the first arm 4 being the lightest; the succeeding arm 7 being heavier than the first, and the next arm 10 being still heavier.-

thus the force of the succeeding blows of the weighted arms increases proportionately.

The trigger 12 engages and holds in suspension a weighted trigger 13 that in turn engages and holds in a similar manner a weigh ed lever '14. lrVhcn the trigger i2 is actuated by the arm 10. the weighted trigger l3 released and the latter thereby releases ollow- I Specification of Letters l'stcnt. Application filed hptembc'r. 9, 1908. Serial No. 452,204.

FIRE-ALARM.

Patented Jan. 10, 1911.

the lever 14. The lever 14 has a blade 15 that in connection with the terminal. plates 16 forms a switchfor completing theelectrical circuit of the wires 17, it liein understood that the latterare to be suita ly connected with a source of electrical energy in the usual manner. The lever 14 has also an arm 18 beneath its pivotal support 19, and the arm 18 is adapted to operate the valve 20 which controls a whistle 21. The triggers 6, 9, 12 andl3 are each provided with a stop 22 to limit, their respective movements, and

the wei hted arms are also likewise provided with stops 23 for a similar purpose. 2- is a disk mounted on a pivot 25' and is provided with a switch arm 26, the latter v adapted to engage severally with opposite.

electrical contacts 27 arid 28, respectively, and the arm 26 has electrical connection with one pole of a battery 29 by means of a wire 30. The disk '24 has a pivoted link 31, at the outer end 'of which is attached a pendent weight 32 and also an upwardly extending strip 33 which connects with the trigger 3 by means of a hook 34: attached to the latter and which extends through the end of the strip.

When in connection with the trigger the.

and when the stripis releasedfrom the trig' ger 3 the weight falls. and the disk is thereby caused to turn with a-jerk which insures movcnu-nt of the arm ill; from one terminal 27 to the other 28.

The electrical wires 17 are connected with lamps the globes of which are colored red to imlicate-danger, and these lamps'hre intended to he placed at convenient locations for observation. Line wires 36 and 37' are intended to be strung through various parts of a building where fire is most likely to occur. In connection with these-line wires are circuit-closers A and B which are so constructed as to form an electrical connection between the wires 36 and 37 after being-subjected to tire. The circuit closer A is designed to be attached to theceiling. and is the same in general as the circuit closer B, the latter being designed to be attached to a wall. In each cirmit closer is a weighted lever 38 that has electrical connection with the line wire 37, and also a contact terminal 35) that has conncctionwith the other wire 36. Each lever is adapted to connect with the corresponding contact terminal 39 when 2 ea1,oao

released by theburning of its retaining cord 40 which is of combustible material. Springs 41, one for each lever, aid in moving the latter when released.

One line wire 36 is connected with the side of the bell'o posite that referred to has connection with t ie contact terminal 28, and the side of the motor opposite that referred to has connection with the contact terminal 27 by means of the wire 44.

A slack cord 45 is connected from the end of the trigger 2 to a pulley 46 on the motor, so that when the motor turns the trigger will release the arm 4. Another slack cord 47 connects t outer end of the trigger 3 with the cord 5 so that as the motor continues to revol after the release of the arm 4, the .trigger'B willbe drawn downward also and thus the strip 33 is released. When the strip is released the arm'26 is thrown from contactwith the terminal 27 and into connection with the terminal 28;

When, the apparatus is set as shown, should the cord of one of the circuit closers become burned, the line wires 36 and 37 would become electricall connected and consequently the motor an battery-would be a com letely in circuit and the-former would be di'iven by energy from the latter. The movement of the motor first actuates the trigger 2 andsubsequently the trigger 3,

' and the movement of the'latter releases the a being lighted; the "whistle blown; and t e bell-rung, all signalin'gthe' presence of fire.

Having described my invention. what lclaim as new and desire to secure by Letters Patent, is

1. In apparatus of the class described, a series of weighted arms pivotally mountedin successive order one above the other, the weights of the respective arms being successively greater from the uppermost to the lowermost; a trigger for holding each of said arms in normal detained position, each arm being adapted to actuate the trigger of the succeeding arm; a fire signal; a weighted lever for actuating the signal; a weighted trigger for holding said lever normally from action; a trigger for holding 1-.thc weighted trigger in normal position and being located beneath the lowermost of said weighted arms and adaptedto be actuated thereby; and means in connection with the trigger of the uppermost weighted arm, adapted to be controlled by heat, for actuating the trigger to release the weighted arm.

2. In apparatus of the class describech'a series of weighted arms pivotally mounted in successive order one above the other, the weights of the respective arms being successively greater from the uppermost to the lowermost; a corresponding series of triggers to hold the respective arms in their uppermost positions a fire signal; a trigger to control the signal, located beneath the lowermost of said weighted arms and adapt ed to be actuated thereby; and means in connection with the trigger of the uppermost weighted arm. adapted to be controlled by heat, for actuating the trigger to release the weighted arm the triggers of the lower arms being adapted to be actuated respectively by the movement of the next preceding arm.

In testimony whereof I aflix my signature, in presence of two witnesses.

. FREDERICK D. SMENNER.

Witnesses:

F. W. Garr, C. H. SMENNER. 

